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Family: Liliaceae (lil-ee-AY-see-ee) (Info) Genus: Hosta (HOSS-tuh) (Info) Cultivar: Krossa Regal Hybridized by Fisher; Year of Registration or Introduction: 1974
Hardiness: USDA Zone 3a: to -39.9 °C (-40 °F) USDA Zone 3b: to -37.2 °C (-35 °F) USDA Zone 4a: to -34.4 °C (-30 °F) USDA Zone 4b: to -31.6 °C (-25 °F) USDA Zone 5a: to -28.8 °C (-20 °F) USDA Zone 5b: to -26.1 °C (-15 °F) USDA Zone 6a: to -23.3 °C (-10 °F) USDA Zone 6b: to -20.5 °C (-5 °F) USDA Zone 7a: to -17.7 °C (0 °F) USDA Zone 7b: to -14.9 °C (5 °F) USDA Zone 8a: to -12.2 °C (10 °F)
Sun Exposure: Light Shade
Other details: Average Water Needs; Water regularly; do not overwater
On Jan 27, 2008, Malus2006 from Coon Rapids, MN (Zone 4a) wrote:
A fast grower but a bit slow to spread. It look good in the middle of a medium to large hosta patch. It will held up its blue color through most of the year and will grow in woodland shade.
On Mar 2, 2005, northgrass from West Chazy, NY (Zone 4b) wrote:
This one is at the top of my list. Lovely blue color lasting late in the season if grown in part shade. Beautifully vase shaped. Even the blossoms look quite impressive, so tall.
On May 26, 2003, smiln32 from Oklahoma City, OK (Zone 7a) wrote:
Mine is not an especially fast grower, but I think that has to do with a shorter dormancy period here in the south. It has rich color and upright habit, making it a lovely counterpart to moundlike hostas.
On May 7, 2002, Greenwood from Bonifay, FL (Zone 8a) wrote:
Krossa Regal starts the season with powdery blue foliage by mid summer the vase shaped mound turns dark green. The flowering habits are notable with scapes 3' to 6' tall.
Regional...
This plant has been said to grow in the following regions:
Montgomery, Alabama Oxford, Connecticut Bonifay, Florida Atlanta, Georgia Cordele, Georgia Lawrenceville, Georgia Caseyville, Illinois Edwardsville, Illinois Machesney Park, Illinois Nilwood, Illinois Peoria, Illinois Greenville, Indiana Olathe, Kansas Silver Spring, Maryland Lexington, Massachusetts Marine City, Michigan Royal Oak, Michigan Minneapolis, Minnesota Lothair, Montana Cape May Court House, New Jersey Columbia, New Jersey Jamesburg, New Jersey Ithaca, New York Elizabeth City, North Carolina Pittsboro, North Carolina Belfield, North Dakota Medora, North Dakota Cincinnati, Ohio Glouster, Ohio Salem, Oregon Norristown, Pennsylvania Pittsburgh, Pennsylvania North Augusta, South Carolina Rockwood, Tennessee Broadway, Virginia Kirkland, Washington Augusta, Wisconsin Marion, Wisconsin Thiensville, Wisconsin
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